Unexpected EOF golang http client error

Why does the 'Unexpected EOF' http error occur ?

When you use the net/http package in golang, its http client by default tries to reuse the existing connections. This is usually fine, but when the server closes the connection without indicating, the http client assumes that the connection is still open and tries to use it for data trasfer which will lead to the occurance of the ‘unexpected eof’ error.

Solution for 'Unexpected EOF' http error

One simple solution to this error is to configure the client to close the connection after each request so that it can use a new connection for each request.
This can be done by setting the req.Close variable to true.

Solution : Close the request connection

// Close the connection
req.Close = true

resp, err := client.Do(req)
if err != nil {
    // Handle error
}
defer resp.Body.Close()

Conclusion

In conclusion, to prevent "Unexpected EOF" HTTP error in Golang while using the net/http package, consider configuring the client to close connections after each request by setting req.Close to true. This ensures fresh connections for each request, effectively addressing server-side closure issues.